The Gunnersbury Triangle is a Local Nature Reserve in the London boroughs of Ealing and Hounslow, immediately to the east of Gunnersbury. An area of woodland, it supports a population of thousands of different species of birds, plants, and other wildlife. It is managed by the London Wildlife Trust. It has free admission and its entrance is on the south of Bollo Lane, a few yards from Chiswick Park Tube Station. The Gunnersbury Triangle is regularly visited by school parties, which study grassland, woodland and pond ecology.